cheers for the confirmation lumpyporridge.... as I said earlier I have already turned off the property.... seems to have done the job (crossed fingers). Incidentally do you have a link for further info cos I couldn't find a huge amount. (about 6 hits on google)

Any ideas why the computer which has been running with sysfader enabled for at least the last 8 months with no problems has suddenly developed the glitch??

Cheers

Z